Pipe-coupling.



P. R./ SGHUYLER. PIPE GOUPLING-.

`APPLICATION FILMS 00T. 1a, 1912.

Patented Apr. 15,1913.

" monnik,

. UNITED srnrnsgrgnur OFFICE.

renown n. s'cHuYLnn, or PATE-uson, NEW JERSEY,

ments-in Pipe-Couplings, ofrwhich the fol-I lowing :is a specification.4

This invention relates to hose couplingsl 1Q" and particularlyito a common type of hose coupling, used in `air-brake systems and the .like, wherein the coupling members (counterparts first placing them face to face with their' l5 mouths infregistry and then turning one or the other or both on'the axis` of their mouths to force the'projection on each under the` camonthepther, theseal'being formed by elastic means at their mouths which 1s. comi pressed by fit-he cams forcing each member toward the other.`

- In place of thenow universally employed sealing means consisting of two gaskets (set one in each coupling member) havingcylin#` drical projecting portions held by the coupled members abutting end to` end-a con# struction generally known to be farl from leak-proof, partly because in itsvery nature it involves a joint (where the ends of thel gaskets abut each other) to be perfectly sealed and partly because it encourages undue wear and injury in the coupling operation with lrespect tothe meetmg faces ot' the gaskets-I have found it of great advantage to use an intermediary between the members which shallbe unitary, that is, jointless, in character; this I form as an expansible elastic gasket which is suitably secured in and adapted to form a hermetic4 40hseal with one 4member and formed to project into the other. In view of certain conditions existing" in the operation and manipulation ofthe parts of fluid-conducting systems of the kind indicated above (systems conveying air or similar elusive fluids under high pressures, and requiring tovbe established and disest-ablished more or less frequently), such as the tendency of the w fluid on the initial inrush to dislocate sepao rable parts or to blowout such parts when a coupling is'disestablished, and the neces.

sity, or at leastthe desideratum, of so formj, ing the gasket that it shall be as little as possible, subject `to wear, and `as muchas j, ."55 possible'ffcapable of'resisting wear, incident to the operations of connecting and, disconspeeincatibn of Leners raient.

Application filed October 18, 1912l` Serial No. 726,451.

ewy Jersey, have in-` of each' other)4 are interlocked by` PIPE-coUrLINae,

necting the coupling members, and that it shall encourage rather than interfere with the facile performance of such operations, and part-icularlythe former, I have found it further advantageous to form the projecting portion of the gasket as a thick-set, lowlying nose; this nose is preferably of such dimension that it protrudes through and somewhat beyond the internal continuous lip whiclris formed at the terminal of the Vpassage of the coupling member into which said nose projects, whereby the ressure on the said lip andv thus increase the extent of the contact between them, and said nose preferably is conical in form so as to come to bear circumferentially thereof against said seat on coupling and before pressure is admitted, and it has an exterior continuous flange to intervene and ,be compressed between the opposed faces of the coupling members and thus augment the sealing effeet.

The invention will now be explained in detail, reference being had to the accompanying drawing, wherein,

Figure 1 is u plan view of the improved coupling, the members of which are shown about to be assembled; Fig. 2 is a Sectional view through the coupling members which are shown separated but positioned with their mouths opposite each other; Fig. 3 is a similar view showing the members assembled; and, Fig. is a side elevationof the improved sealing device. j

The coupling members a a are of the usual construction, having the Vflat adjoining faces b b provided with 'the circular mouths c c each having an internal circumferential lip r] whose outer face is flush with the outer face b of the member a and lwhose inner or cylindrical surface forms a Patented Apr. 15,4913.v

.acting to expand the gasket ,wil cause the nose to be flared or curled outwardly around Each `member has, as usual, theA "being exteriorly y formed-With a more or less shallow circum -ferential channel 0 .producing onsaid body,

vice 'constituting 'the` `elastic seal-forming means is employed; it is adapted to be ap-v plied toI 'either ofthe members. Thisdevice may be v describedv thus: It is an annular bodyof rubber-,or the like formed withits bore z' preferably rounded at the' ends thereof and having 'an' exterior cross-seeti'o'nally rectangular circumferential groove of such .width and'suficintly spaced from the base' `c of said body that, Whenthe'latter v*is applied in position in `one of-'the members,

' Whose mouth it snugly fits, ,thelip d of said member` closely fits said groove j' while the flange Z back-of said groove j closely fits 'said groove fof said. member. Forward of` said groove j said annular elastic bodyhas i an extended but thick-set,v low-lying nose m which is rounded at its extremity (as at n), thenose-including portion of said body generally conicalA but forward of groove y', the flange @whose diameter is thus` appreciably greater than that lof the mouth of either of -the coupling' members a a.

Thus constructed, and arranged in one of the coupling members inthe way explained above, the sealing'device or body actsv as foll lows: In assemblingthe'members'they are brought into proper position for effecting the articulation thereof necessary to intgr/ lock them and produce the seal by .pl'aing` the member carrying the sealingidev-ice- 1n facetoface relation to the, other*member;A A With the nose of said device entered into the mouth of thelatter member. the articulation'of'the members, or either of them,- the sealing device maintains the memvbre/ns..properly centered With relation tp each *Mfyw other. Under the compressing action lof the projections and cams g and h of said members the ange' p of the sealing device bej vcomessqueezed'between the adjoining faces 'lb b of said members, andv incidentally the .edge d of thelip d of the lower member in Figs. 3 and 4, by contact with the.coni cal ,outer `surface ofthe noseof 'said devlce,

' acts to displace toward the vbase'c-'the superficial portion of said nose, so that Ithe latter is expanded' and thereby made to hug the innercylindricalsurface d of said lip d (Fig,3)'. In this way, regardless' of the effect of .interioripressura the sealing-contact between"v the sealing i device and .the lower member' is made substantially fequivalent t-o that between the sealing deviceV and the uppermember 'existing at lip e aswell as 4lip d thereof. The thick-set 1ow-lyin f ormation of the nose greatly facilitates finding the centered relationof thememb'ers in coupling .themtogether, besides giving 'the Vgasket sufficient stability not only to 'withstand the wear and tear incidentto that `-operation but to resistits being dlslocated or On effecting E distorted by the pressure. When, now, the

pressure bedomes operative within the coupli/ng the sealing 'effect will, if. anything, be 'augmented thereby, due to the pressure tending to force the material ofthe sealing device. outwardly thrmgh the crevice formed between; the faces b -bv of the mem'- b'ers-a a, with aconsequent bunching or massifngl of -said-,material `at the annular approach .to said crevice, and' at the same ltime `'expanding the nose "m, 'already (asvifsv stated) flaring and hugging the-flip d through which it protrudes, into increased contact'with said lip. l l

Having thus fully describedl my invencu-re by Letters Patent is z- 1.. In` combination, with rseparablyf inter- I locked counterpart'couplg members hav- 4 ing. passages -tl'ierethrou terminating in the most. relatively approximateportions of said' members in opposition. to. eachother, f

the terminalv of each passagegforming a conv v tinuous sealing seat, anfelastic expansible. I f

vannular gasket heldbyone member in the l terminalof'its',passage and having a rela-v tively low-lying. :thick-set continuous nose seat of the other'member under the influence substantially as described. f A

th separably inter- 2. In combination, Wi

locked counterpart coupling 4members having passages therethrough terminating in the most relatively approximate portions of .projecting into ,and adapted circumferen-v tially thereof toform-aseal withthe. sealing lo f.- internal pressure to .expand said gasket,

said members infopposition to each other,

tinuousv sealingseat, .an elastic expansible annular gasket held by one member-' in the stantially as described."

3. Incombinatlon, With separably interi the terminal of each passage vforming a con'- `terminal of its passageand havingla r'ela- "tively low-lying thick-set -conical eontinuous nose projecting into andbeing exteriorly thereof in continuous sealing contact with' locked counterpart coupling members havthe sealingseat ofthe o'therimember, sald nose having en exte'rror'annularl flange held compressed'between the lopposite 4faces of said. members', substantially as described.

4. In combination,y 'with separably interi locked counterpart coupling menflbel'sv hav-l ing' passages therethrough .terminating in tively beyond sai i the most relatively approximate portions of sald members in the terminal of each passagebeng an inwardly projecting annular lip, and an elas- 5 tic expansible annular gasket' held `by ,one

-memberjn the terminal of lits passage and having a relatively low-lyingthick-set oontinuous nose proecting through and rela- 1ip and 'adapted form Uopies o!l this patent-moy be obtained for ve cents' each, by addressingthe Commissioner of Patents, i

pposition :to each other,

therewith a continuous seal under the in- 1u in presence of two witnesses.

P. R. SCHUYLER.

Witnesses:

JOHN W. STEWARD,

WM. D. BELL.

Washingtom D. 0. 

